231k views
1 vote
Name the three pollutants that have decreased the most since 1990.

User Deserie
by
8.7k points

2 Answers

1 vote
Lead, carbon monoxide, and sulfur dioxide have decreased the most since 1990.
User Sreejith Menon
by
7.0k points
6 votes
They vary but lead, carbon monoxide, and sulfur dioxide are some of the most common ones that have decreased the most
User Hosack
by
7.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.